New Delhi, Dec. 16 -- Delhi's air quality showed signs of improvement on Tuesday morning, bringing some relief after three days of hazardous 'severe' pollution levels.

At 6 am, Delhi's air quality index (AQI) stood at 381 in the 'very poor' category, showing an improvement from Monday's reading of 427 and Sunday's 461, the highest pollution level recorded in the city so far this winter.

Experts attributed the improvement to persistent surface winds that helped disperse pollutants trapped near the ground. Wind speeds picked up on Monday afternoon, gusting up to 15 kmph, and continued through the night.

According to the India Meteorological Department (IMD), air quality was likely to improve further on Tuesday as surface wind speeds were f...